A small ball is tied to a string and set rotating with negligible friction in a vertical circle. Prove that the tension in the string at the bottom of the circle exceeds that at the top of the circle by eight times the weight of the ball. Assume the ball's speed is zero as it sails over the top of the circle and there is no additional energy added to the ball during rotation.
A small ball is tied to a string and set rotating with negligible friction in a vertical circle. Prove that the tension in the string at the bottom of the circle exceeds that at the top of the circle by eight times the weight of the ball. Assume the ball's speed is zero as it sails over the top of the circle and there is no additional energy added to the ball during rotation.
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Transcribed Image Text:A small ball is tied to a string and set rotating with negligible friction in a vertical circle. Prove that the
tension in the string at the bottom of the circle exceeds that at the top of the circle by eight times the
weight of the ball. Assume the ball's speed is zero as it sails over the top of the circle and there is no
additional energy added to the ball during rotation.
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